sdext/source/pdfimport/odf/odfemitter.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <odfemitter.hxx>
  22
  23 #include <rtl/ustrbuf.hxx>
  24 #include <osl/diagnose.h>
  25 #include <com/sun/star/io/XOutputStream.hpp>
  26
  27 #include <comphelper/stl_types.hxx>
  28 #include <utility>
  29
  30 using namespace com::sun::star;
  31
  32 namespace pdfi
  33 {
  34
  35 namespace {
  36
  37 class OdfEmitter : public XmlEmitter
  38 {
  39 private:
  40     uno::Reference<io::XOutputStream> m_xOutput;
  41     uno::Sequence<sal_Int8>           m_aLineFeed;
  42     uno::Sequence<sal_Int8>           m_aBuf;
  43
  44 public:
  45     explicit OdfEmitter( uno::Reference<io::XOutputStream> xOutput );
  46
  47     virtual void beginTag( const char* pTag, const PropertyMap& rProperties ) override;
  48     virtual void write( const OUString& rString ) override;
  49     virtual void endTag( const char* pTag ) override;
  50 };
  51
  52 }
  53
  54 OdfEmitter::OdfEmitter( uno::Reference<io::XOutputStream> xOutput ) :
  55     m_xOutput(std::move( xOutput )),
  56     m_aLineFeed{ '\n' }
  57 {
  58     OSL_PRECOND(m_xOutput.is(), "OdfEmitter(): invalid output stream");
  59
  60     write(u"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"_ustr);
  61 }
  62
  63 void OdfEmitter::beginTag( const char* pTag, const PropertyMap& rProperties )
  64 {
  65     OSL_PRECOND(pTag,"Invalid tag string");
  66
  67     OUStringBuffer aElement("<");
  68     aElement.appendAscii(pTag);
  69     aElement.append(" ");
  70
  71     std::vector<OUString>        aAttributes;
  72     for( const auto& rCurr : rProperties )
  73     {
  74         OUString aAttribute =
  75             rCurr.first +
  76             "=\"" +
  77             rCurr.second +
  78             "\" ";
  79         aAttributes.push_back(aAttribute);
  80     }
  81
  82     // since the hash map's sorting is undefined (and varies across
  83     // platforms, and even between different compile-time settings),
  84     // sort the attributes.
  85     std::sort(aAttributes.begin(), aAttributes.end());
  86     std::copy(aAttributes.begin(), aAttributes.end(),
  87               comphelper::OUStringBufferAppender(aElement));
  88     aElement.append(">");
  89
  90     write(aElement.makeStringAndClear());
  91 }
  92
  93 void OdfEmitter::write( const OUString& rText )
  94 {
  95     const OString aStr = OUStringToOString(rText,RTL_TEXTENCODING_UTF8);
  96     const sal_Int32 nLen( aStr.getLength() );
  97     m_aBuf.realloc( nLen );
  98     const char* pStr = aStr.getStr();
  99     std::copy(pStr,pStr+nLen,m_aBuf.getArray());
 100
 101     m_xOutput->writeBytes(m_aBuf);
 102     m_xOutput->writeBytes(m_aLineFeed);
 103 }
 104
 105 void OdfEmitter::endTag( const char* pTag )
 106 {
 107     OUStringBuffer aElement("</");
 108     aElement.appendAscii(pTag);
 109     aElement.append(">");
 110     write(aElement.makeStringAndClear());
 111 }
 112
 113 XmlEmitterSharedPtr createOdfEmitter( const uno::Reference<io::XOutputStream>& xOut )
 114 {
 115     return std::make_shared<OdfEmitter>(xOut);
 116 }
 117
 118 }
 119
 120 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */